409 Dual point Distributor 1110637

[409 Chevy Performance]

I have 2 348/409 dual point distributors with collar tags 1110637. Cannot find any info on them. They have No oil tube. They fit the 348/409 application with no problems. One has tag Aug 27 1962, they possible if my memory fits came as a part of a service package. Any info would help, Thanks

[IgnitionMan]

I have the Chevrolet by the Numbers book for 1965, but not earlier, and this number doesn't appear in it.

Also, I checked all my Motor's Manuals and still, no record of that number.

But, I also have a NAPA parts guide that lists parts by distributor number, and thqat number is a valid one.

It may be a special parts number, done for a kit or other application, and not an RPO (Regular Production Option) part. RPO numbers were for production parts, not special ones.

[409 Chevy Performance]

Thanks for the information.

[4onthefloor]

Number doesn't appear in the 60-65 book either Jack !

[CHEV601234]

Possibly Marine. Check gear pitch for reverse rotation..

[409 Chevy Performance]

Number doesn't appear in the 60-65 book either Jack !

Thanks Bob. :

[409 Chevy Performance]

Possibly Marine. Check gear pitch for reverse rotation..

Thanks for the Info, Will let you know asap.:doh

[Rusty Everitt]

What is a reverse rotation engine and what is it's application ?
Rusty

[CHEV601234]

Could be a gear drive cam (backwards) or its build with reverse firing order for tandem engine boat. left engine has to run backwards otherwide boat makes a sharp turn when to apply throttle!!! bad thing!:nono1:

[CHEV601234]

antone who races always has a spare.

[409 Chevy Performance]

I would think that if they are in fact a marine distributor it would be possible if the applications was for a 2 engine boat setup. I just checked both distributors. The distributor drive gear are correct for the passanger application. The teeth pitch are the same and tooth count the same. If they are for a marine application, someone could have changed the drive gear?????????::scratch :scratch

[IgnitionMan]

We must reme4mber that the distributor, even on a reverse rotation engine, turns in the conventional direction, I.E., clockwise, even if other components turn reversed. This because there has NEVER been a V8 reverse rotation, inside the pan oil pump.

One of two conditions exist for these reverse rotation engines,

The camshaft is gear driven, and rotates reversed from the crankshaft, as do some of the 427 truck engines, with a single crankshaft gear and a single camshaft gear

Or,

The crankshaft, camshaft are same rotation, both reversed.

Might check to see if the rotor will turn clockwise with the shaft/gear held in place, and then, let the rotor go and see if it snaps back counterclockwise. That'd prove the dist still rotates clockwise.

Just a test.

[tripower]

On the marine engines they used either a timing chain for left hand rotation (standard rotation or counter clockwise) or, a timing gear for right hand rotation (Clockwise). They both used the same distributor that turned left hand (standard rotation). Only Chris-Craft ran the distributors backwards or, right hand rotation by using a cast timing chain cover that allowed the distributor to be mounted in the front of the motor but, it would still be the same distributor just ran backwards using a reverse timing gear. :cool: Hope this helps Dan

[IgnitionMan]

I've never seen a W dist that rotated reversed (counter-clockwise) in a W engine, only gears on the reverse rotation cam, and dist to make the dists and oil pumps rotate regular rotation, clockwise.

A reverse rotation distributor (counter-clockwise), would also need a reverse rotation oil pump to make the pump pressure the engine, and not pump oil backwards, back into the pan.